title: Subtrochanteric shortening in total hip arthroplasty: biomechanical comparison of four techniques.
abstract: Safe reduction of the femoral head into the true acetabulum requires a certain amount of femoral shortening in patients with high dislocation of the hip. In subtrochanteric shortening applications, to reduce complications it is necessary to maintain a stable fixation at the osteotomy line. The purpose of this study is to investigate frequently used methods from a biomechanical point of view. Four osteotomy groups were created with composite femurs to investigate subtrochanteric osteotomies; transverse, oblique, z-subtrochanteric and double Chevron. All loading tests were carried out with two implant types both with and without strut graft and cable fixation. No single inherent feature increasing the stability of the investigated osteotomy types was found. Additionally graft application did not have a significant contribution to stability.
authors.affiliation: Department of Orthopaedics and Traumatology Baskent University School of Medicine, Zubeyde Hanim Research and Medical Center, Izmir, Turkey.
authors.forename: Kivanc S
authors.initials: KS
authors.lastname: Muratli
authors.affiliation: Department of Orthopaedics and Traumatology, Dokuz Eylul University School of Medicine, Izmir, Turkey.
authors.forename: Vasfi
authors.initials: V
authors.lastname: Karatosun
authors.affiliation: Department of Biomechanics, Dokuz Eylul University School of Medicine, Izmir, Turkey.
authors.forename: Bora
authors.initials: B
authors.lastname: Uzun
authors.affiliation: Department of Biomechanics, Dokuz Eylul University School of Medicine, Izmir, Turkey.
authors.forename: Salih
authors.initials: S
authors.lastname: Celik
mesh_terms: D000077:Acetabulum / Q000601:surgery; D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D001696:Biomechanical Phenomena; D005269:Femur / Q000503:physiopathology / Q000601:surgery*; D005270:Femur Head / Q000601:surgery*; D006618:Hip Dislocation, Congenital / Q000503:physiopathology / Q000601:surgery*; D010027:Osteotomy / Q000379:methods; D013314:Stress, Mechanical
keywords: arthroplasty; biomechanics; congenital; hip dislocation; hip joint; osteotomy